This report is intended to update and replace the original 2000-2020 sewer service area plan for the City of Marshfield and surrounding area. These types of plans are also known as areawide water quality management plans. The general purpose of this areawide water quality management plan, herein referred to as Sewer Service Area Plan, is to maintain a twenty year sanitary sewer service boundary for the Marshfield Urban Area and an institutional structure for implementing the Plan and managing the extension of sanitary sewage services within this urban area. The urban sanitary sewer service area boundary identifies the geographic land area within which sanitary sewer service could be made available by the year 2030 through a cost-effective, environmentally acceptable manner.